Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
hieu van » hieu va, thien van, lieu va
sach thu » sach thue, sach thieu, sach tham
duc manh » suc manh, duc minh, duc tan
lam cua » nam cua, lam chat
van cam » van nam, van lam, van cau
sach ty » sach y, sach tu, xach tay
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach thu)) lang xa hoi. hieu van cam ((duc manh) or (duc anh)) thanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) lang xa hoi. hieu van cam ((duc manh) OR (duc anh)) thanh lam cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) lang xa hoi. hieu van cam ((duc manh) or (duc anh)) thanh lam cua tre*.